Sony's been explaining the design story behind its new Xperia range at a UK briefing, how it's trying to balance both the dematerialization of tech (touchscreens, gesture interfaces) and a design that's both desirable and beautiful -- and Sony's certainly got the latter down on its new smartphone. The Xperia Z Ultra follows the lines of the rest of the Z-series. With the same "OmniBalance" plane surface of screen, this time reaching 6.4 inches but still running at 1080p resolution, it feels bigger than the original Xperia Z. You're looking at a screen width almost identical to a passport and that 6.5mm profile help